Not sure about the Merc's 7G DCT gearbox but would expect it to be smooth with a dual clutch system. Could be different matter if this is a dry system though. Not sure. My Octy 6 speed DSG wet worked faultlessly for the almost thirteen years that I owned it (as mentioned before, (I never serviced it either, just sayin, Lol) The 1 series with the Steptronic is beautifully smooth double clutch, no issues 1st to 2nd gear or any at all. Lovely car ........ (bar the road noise, as I mentioned elsewhere and as @Ootohere did warn me about.....) @Gaz I wouldn't expect a 1.6L to be a particularly firm ride, but obvs a test drive is a must for as many miles as you can get away with, Lol. I didn't test drive mine properly but love most of it except the OTT road noise on rough surfaces, especially considering how young it is. I am also considering a swap mostly due to this but also decided to take the state of our roads into consideration ........... A tractor is a bit slow but you catch my drift.......... Lol, as I cannot see much improvements and our roads just get busier and busier.... Good luck in finding what she likes.